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Hi Alex, Even at idling r.p.m. the exhaust valve[s] couldn't let the water
escape from the cylinder fast enough to avoid hydraulicing, which in turn
would stop the engine almost instantaneously, and bend the connecting rod[s] like a banana.This all being because, unlike gas, you can't compress water.
The idea sounds promising, but even with mods to allow the water to get into and out of the cylinder quickly enough to avoid the aforementioned problem,
it would not work because the amount of water in the cylinder would be far
too great to allow the heat transfer during the very short time that the water is in the cylinder. You might, with experimentation, get warm to hot water.
Another possible barrier would be the huge temperature gradients across the different parts of the engine might cause cracks in the block or cyl.head[s].
raymo
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